736 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
three times the reagent dosage, conventional polymer tech-
nology fails to achieve the level of consolidation attained by
TNS technology at a lower dosage.
The unsheared yield stress of the treated samples from
Producer #1 is slightly lower than the samples treated with
the conventional polymer from Producer #1 as shown in
Figure 4. The difference increases at higher solids concentra-
tions showing lower shear resistance with the new additive.
Figure 5 shows that the yield stress decreases significantly
when sheared compared to the unsheared samples. The
behavior between the untreated and TNS ™ treated sam-
ples is comparable in both the unsheared and fully sheared
samples. The decrease in the sheared materials indicated
that following treatment with both products flow through
a pipeline will be enhanced.
Sample from Producer #1—Summary of Results
The following findings were made:
• The results from the standard 2-Liter batch settling/
consolidation tests demonstrate that the novel chem-
istry exhibits significantly higher dewatering rates
at equivalent reagent dosage and target thickener
underflow solids concentration. This translates to
increased thickener solids loading rates and the abil-
ity to achieve higher final solids concentrations in
the thickener underflow compared to conventional
polymer chemistry.
• The new chemistry demonstrates acceptable solids
loading rates even at higher than optimum floccu-
lation solids concentrations, all while maintaining
relatively low reagent dosing.
• The unsheared and sheared yield stress for the
polymer and TNS ™ treated samples show similar
behavior.
The results from producer #2 closely resemble those
obtained from producer #1 and will not be included in this
paper. However, they are available upon request from the
authors.
GOLD TAILINGS DEWATERING WITH
TNS™ TECHNOLOGY
Background
Two gold tailings samples were evaluated to assess the
impact of TNS ™ technology using a recessed chamber
pressure filtration system designed by the client. Details of
the samples are provided in Table 3.
The primary objective was to determine the effect of
this technology on the rheological characteristics of the final
cake, specifically to prevent the formation of thixotropic or
brittle cake and to reduce filtration time for tailings that
Figure 4. Sample from Producer #1—vane shear rheological characterization (unraked-unsheared)
three times the reagent dosage, conventional polymer tech-
nology fails to achieve the level of consolidation attained by
TNS technology at a lower dosage.
The unsheared yield stress of the treated samples from
Producer #1 is slightly lower than the samples treated with
the conventional polymer from Producer #1 as shown in
Figure 4. The difference increases at higher solids concentra-
tions showing lower shear resistance with the new additive.
Figure 5 shows that the yield stress decreases significantly
when sheared compared to the unsheared samples. The
behavior between the untreated and TNS ™ treated sam-
ples is comparable in both the unsheared and fully sheared
samples. The decrease in the sheared materials indicated
that following treatment with both products flow through
a pipeline will be enhanced.
Sample from Producer #1—Summary of Results
The following findings were made:
• The results from the standard 2-Liter batch settling/
consolidation tests demonstrate that the novel chem-
istry exhibits significantly higher dewatering rates
at equivalent reagent dosage and target thickener
underflow solids concentration. This translates to
increased thickener solids loading rates and the abil-
ity to achieve higher final solids concentrations in
the thickener underflow compared to conventional
polymer chemistry.
• The new chemistry demonstrates acceptable solids
loading rates even at higher than optimum floccu-
lation solids concentrations, all while maintaining
relatively low reagent dosing.
• The unsheared and sheared yield stress for the
polymer and TNS ™ treated samples show similar
behavior.
The results from producer #2 closely resemble those
obtained from producer #1 and will not be included in this
paper. However, they are available upon request from the
authors.
GOLD TAILINGS DEWATERING WITH
TNS™ TECHNOLOGY
Background
Two gold tailings samples were evaluated to assess the
impact of TNS ™ technology using a recessed chamber
pressure filtration system designed by the client. Details of
the samples are provided in Table 3.
The primary objective was to determine the effect of
this technology on the rheological characteristics of the final
cake, specifically to prevent the formation of thixotropic or
brittle cake and to reduce filtration time for tailings that
Figure 4. Sample from Producer #1—vane shear rheological characterization (unraked-unsheared)